This is anita version 1.49
Using pexpect version 4.6.0
/usr/pkg/bin/anita \
    --workdir=/bracket/sparc64/test/2019.06.15.15.22.56/anita \
    --structured-log-file=/bracket/sparc64/test/2019.06.15.15.22.56/test.slog \
    '--vmm-args=-tb-size 128' \
    --test-timeout \
    300000 \
    test \
    file:///bracket/sparc64/test/2019.06.15.15.22.56/release/images/NetBSD-8.99.45-sparc64.iso
QEMU emulator version 3.1.0
Copyright (c) 2003-2018 Fabrice Bellard and the QEMU Project developers
not reversing virtio devices
qemu-system-sparc64 \
    -m \
    128 \
    -drive \
    file=/bracket/sparc64/test/2019.06.15.15.22.56/anita/wd0.img,format=raw,media=disk,snapshot=on \
    -nographic \
    -drive \
    file=/bracket/sparc64/test/2019.06.15.15.22.56/anita/tests-results.img,format=raw,media=disk,snapshot=off \
    -tb-size \
    128
child pid is 21314
OpenBIOS for Sparc64
Configuration device id QEMU version 1 machine id 0
kernel cmdline 
CPUs: 1 x SUNW,UltraSPARC-IIi
UUID: 00000000-0000-0000-0000-000000000000
Welcome to OpenBIOS v1.1 built on Oct 5 2018 08:20
  Type 'help' for detailed information
Trying disk:a...
Not a bootable ELF image
Not a bootable a.out image
Not a bootable FCode image
No valid state has been set by load or init-program

0 > Traceback (most recent call last):
  File "/usr/pkg/bin/anita", line 144, in <module>
    status = main()
  File "/usr/pkg/bin/anita", line 135, in main
    status = a.run_tests(timeout = options.test_timeout)
  File "/usr/pkg/lib/python2.7/site-packages/anita.py", line 1998, in run_tests
    child = self.boot(scratch_disk_args)
  File "/usr/pkg/lib/python2.7/site-packages/anita.py", line 1941, in boot
    self.child.expect("login:")
  File "/usr/pkg/lib/python2.7/site-packages/anita.py", line 181, in expect
    r = pexpect.spawn.expect(self, pattern, *args, **kwargs)
  File "/usr/pkg/lib/python2.7/site-packages/pexpect/spawnbase.py", line 341, in expect
    timeout, searchwindowsize, async_)
  File "/usr/pkg/lib/python2.7/site-packages/pexpect/spawnbase.py", line 369, in expect_list
    return exp.expect_loop(timeout)
  File "/usr/pkg/lib/python2.7/site-packages/pexpect/expect.py", line 119, in expect_loop
    return self.timeout(e)
  File "/usr/pkg/lib/python2.7/site-packages/pexpect/expect.py", line 82, in timeout
    raise TIMEOUT(msg)
pexpect.exceptions.TIMEOUT: Timeout exceeded.
<anita.pexpect_spawn_log object at 0x7cbd1f0d2d50>
command: /usr/pkg/bin/qemu-system-sparc64
args: ['/usr/pkg/bin/qemu-system-sparc64', '-m', '128', '-drive', 'file=/bracket/sparc64/test/2019.06.15.15.22.56/anita/wd0.img,format=raw,media=disk,snapshot=on', '-nographic', '-drive', 'file=/bracket/sparc64/test/2019.06.15.15.22.56/anita/tests-results.img,format=raw,media=disk,snapshot=off', '-tb-size', '128']
buffer (last 100 chars): 't image\r\r\nNot a bootable FCode image\r\r\nNo valid state has been set by load or init-program\r\r\n\r\r\n0 > '
before (last 100 chars): 't image\r\r\nNot a bootable FCode image\r\r\nNo valid state has been set by load or init-program\r\r\n\r\r\n0 > '
after: <class 'pexpect.exceptions.TIMEOUT'>
match: None
match_index: None
exitstatus: None
flag_eof: False
pid: 21314
child_fd: 12
closed: False
timeout: 3600
delimiter: <class 'pexpect.exceptions.EOF'>
logfile: None
logfile_read: <anita.multifile object at 0x7cbd1f09dd50>
logfile_send: <open file '/bracket/sparc64/test/2019.06.15.15.22.56/test.slog', mode 'w' at 0x7cbd1f490d20>
maxread: 2000
ignorecase: False
searchwindowsize: None
delaybeforesend: 0.05
delayafterclose: 30.0
delayafterterminate: 30.0
searcher: searcher_re:
    0: re.compile('login:')
     3630.61 real      3552.93 user         1.46 sys